Microleakage Evaluation at Implant-Abutment Interface Using Radiotracer Technique.

Content Provider	Europe PMC
Author	Siadat, Hakimeh Arshad, Mahnaz Mahgoli, Hossein-Ali Fallahi, Babak
Copyright Year	2016
Abstract	Objectives:Microbial leakage through the implant-abutment (I-A) interface results in bacterial colonization in two-piece implants. The aim of this study was to compare microleakage rates in three types of Replace abutments namely Snappy, GoldAdapt, and customized ceramic using radiotracing.Materials and Methods:Three groups, one for each abutment type, of five implants and one positive and one negative control were considered (a total of 17 regular body implants). A torque of 35 N/cm was applied to the abutments. The samples were immersed in thallium 201 radioisotope solution for 24 hours to let the radiotracers leak through the I-A interface. Then, gamma photons received from the radiotracers were counted using a gamma counter device. In the next phase, cyclic fatigue loading process was applied followed by the same steps of immersion in the radioactive solution and photon counting.Results:Rate of microleakage significantly increased (P≤0.05) in all three types of abutments (i.e. Snappy, GoldAdapt, and ceramic) after cyclic loading. No statistically significant differences were observed between abutment types after cyclic loading.Conclusions:Microleakage significantly increases after cyclic loading in all three Replace abutments (GoldAdapt, Snappy, ceramic). Lowest microleakage before and after cyclic loading was observed in GoldAdapt followed by Snappy and ceramic.
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ISSN	17352150
Journal	Journal of Dentistry (Tehran, Iran) [J Dent (Tehran)]
Volume Number	13
PubMed Central reference number	PMC5376544
Issue Number	3
PubMed reference number	28392814
e-ISSN	20082185
Language	English
Publisher	Tehran University of Medical Sciences
Publisher Date	2016-06-01
Access Restriction	Open
Rights License	This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License which allows users to read, copy, distribute and make derivative works for non-commercial purposes from the material, as long as the author of the original work is cited properly. Copyright© Dental Research Center, Tehran University of Medical Sciences
Subject Keyword	Dental Implants Dental Implant-Abutment Design Thallium Chloride
Content Type	Text
Resource Type	Article
Subject	Dentistry